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3 years ago

H=39t-5t2 find all the values of t for which the rockets hight is 22 meters

1 answer:

5 0

I believe that for this question you will use the quadratic equation which is: (-b +/- sqrt(b^2-4(a)(c))/2a Plug in -5=a, 39=b, 22=c and that should give you 2 answers for t.

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PLZ HELP ill GIVE BRAINIESt!!!!20 Points

jekas [21]

A. more homework better scores
b. about 60 score
c. standard score

7 0

3 years ago

Read 2 more answers

John is building a fence around his home currently his fence measures 14 feet on each side but he wants to increase only the wid

nalin [4]

Answer:

The dimensions of rectangular fence are 14 feet and 20 feet.

Step-by-step explanation:

We are given the following in the question:

Length of rectangular fence = 14 feet

Width of fence = (14+x) feet

Area of rectangular field = 280 square feet

Area of rectangular field =

$A= \text{Length}\times \text{Width}$

Putting the values, we get,

$280 = 14(14+x)\\\\14 + x = \dfrac{280}{14}\\\\14 + x = 20\\x =20-14\\x = 6$

Thus, the dimensions of rectangular fence are 14 feet and 20 feet.

7 0

3 years ago

Solve for all values of x by factoring. x^2-5x=-2x

-Dominant- [34]

Answer:

x = 0

x = 3

Step-by-step explanation:

$x^2 - 5x = -2x\\x^2 - 5x + 2x = 0\\x^2 - 3x = 0\\x(x - 3) = 0\\x=0 , x-3=0\\x=0, x=3$

4 0

3 years ago

What is the answer if you solve 2/3x - 4 = -2

n200080 [17]

2/3 x -4 = -2 add 4 to both sides

2/3 x -4 +4 = -2 +4

2/3 x = 2

mutliply both sides by 3/2

(3/2) * (2/3) x = (3/2) * 2

x =3

6 0

3 years ago

Travka [436]

Answer:

$203.04

Step-by-step explanation:

First, you have to calculate the cost of sending one free sample and you could use a rule of three to find it:

23 onces → $0.36

69 onces → x

x=(69 onces*$0.36)/23 onces= $1.08

Then, you can multiply the cost of sending one free sample for the quantity of samples Instant Meals wants to mail out:

$1.08*188= $203.04

According to this, the answer is that Instant Meals would spend $203.04 on postage to mail out one hundred eighty-eight samples.

8 0

3 years ago